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Russia, Nizhny Novgorod, Gagarin Ave., 23 - Lobachevsky State University
A drought, which can be often accompanied by increased temperature, is a key adverse factor for agricultural plants. Remote sensing of early plant changes under water shortage is a prospective way to improve plant cultivation; in particular, the sensing can be based on measurement of difference reflectance indices (RIs). We complexly analyzed the efficiency of RIs based on 400–700 nm wavelengths for revealing the influences of water shortage and short-term heating on plant seedlings. We measured spectra of reflected light in leaves of pea, wheat, and pumpkin under control and stress conditions. All possible RIs in the 400–700 nm range were calculated, significances of differences between experimental and control indices were estimated, and heatmaps of the significances were constructed. It was shown that the water shortage (pea seedlings) changed absolute values of large quantity of calculated RIs. Absolute values of some RIs were significantly changed for 1–5 or 2–5 days of the water shortage; they were strongly correlated to the potential quantum yield of photosystem II and relative water content in leaves. In contrast, the short-term heating (pea, wheat, and pumpkin seedlings) mainly influenced light-induced changes in RIs. Our results show new RIs, which are potentially sensitive to the action of stressors.
Ekaterina Sukhova; Lyubov Yudina; Ekaterina Gromova; Anastasiia Ryabkova; Dmitry Kior; Vladimir Sukhov. Complex Analysis of the Efficiency of Difference Reflectance Indices on the Basis of 400–700 nm Wavelengths for Revealing the Influences of Water Shortage and Heating on Plant Seedlings. Remote Sensing 2021, 13, 962 .
AMA StyleEkaterina Sukhova, Lyubov Yudina, Ekaterina Gromova, Anastasiia Ryabkova, Dmitry Kior, Vladimir Sukhov. Complex Analysis of the Efficiency of Difference Reflectance Indices on the Basis of 400–700 nm Wavelengths for Revealing the Influences of Water Shortage and Heating on Plant Seedlings. Remote Sensing. 2021; 13 (5):962.
Chicago/Turabian StyleEkaterina Sukhova; Lyubov Yudina; Ekaterina Gromova; Anastasiia Ryabkova; Dmitry Kior; Vladimir Sukhov. 2021. "Complex Analysis of the Efficiency of Difference Reflectance Indices on the Basis of 400–700 nm Wavelengths for Revealing the Influences of Water Shortage and Heating on Plant Seedlings." Remote Sensing 13, no. 5: 962.
A local leaf burning causes variation potential (VP) propagation, a decrease in photosynthesis activity, and changes in the content of phytohormones in unstimulated leaves in pea plants. The VP-induced photosynthesis response develops in two phases: fast inactivation and long-term inactivation. Along with a decrease in photosynthetic activity, there is a transpiration suppression in unstimulated pea leaves, which corresponds to the long-term phase of photosynthesis response. Phytohormone level analysis showed an increase in the concentration of jasmonic acid (JA) preceding a transpiration suppression and a long-term phase of the photosynthesis response. Analysis of the spatial and temporal dynamics of electrical signals, phytohormone levels, photosynthesis, and transpiration activity showed the most pronounced changes in the more distant leaf from the area of local stimulation. The established features are related to the architecture of the vascular bundles in the pea stem.
Maria Ladeynova; Maxim Mudrilov; Ekaterina Berezina; Dmitry Kior; Marina Grinberg; Anna Brilkina; Vladimir Sukhov; Vladimir Vodeneev. Spatial and Temporal Dynamics of Electrical and Photosynthetic Activity and the Content of Phytohormones Induced by Local Stimulation of Pea Plants. Plants 2020, 9, 1364 .
AMA StyleMaria Ladeynova, Maxim Mudrilov, Ekaterina Berezina, Dmitry Kior, Marina Grinberg, Anna Brilkina, Vladimir Sukhov, Vladimir Vodeneev. Spatial and Temporal Dynamics of Electrical and Photosynthetic Activity and the Content of Phytohormones Induced by Local Stimulation of Pea Plants. Plants. 2020; 9 (10):1364.
Chicago/Turabian StyleMaria Ladeynova; Maxim Mudrilov; Ekaterina Berezina; Dmitry Kior; Marina Grinberg; Anna Brilkina; Vladimir Sukhov; Vladimir Vodeneev. 2020. "Spatial and Temporal Dynamics of Electrical and Photosynthetic Activity and the Content of Phytohormones Induced by Local Stimulation of Pea Plants." Plants 9, no. 10: 1364.